From 1518646eef26c220e9256906260ecaaa64503522 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Mon, 15 Apr 2024 14:54:15 -0700 Subject: xfs: create a incompat flag for atomic file mapping exchanges Create a incompat flag so that we only attempt to process file mapping exchange log items if the filesystem supports it, and a geometry flag to advertise support if it's present. Signed-off-by: Darrick J. Wong Reviewed-by: Christoph Hellwig --- fs/xfs/libxfs/xfs_format.h | 23 ++++++++++++----------- fs/xfs/libxfs/xfs_fs.h | 1 + fs/xfs/libxfs/xfs_sb.c | 5 +++++ fs/xfs/xfs_mount.h | 2 ++ fs/xfs/xfs_super.c | 4 ++++ 5 files changed, 24 insertions(+), 11 deletions(-) (limited to 'fs') diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h index 2b2f9050fbfb..ff1e28316e1b 100644 --- a/fs/xfs/libxfs/xfs_format.h +++ b/fs/xfs/libxfs/xfs_format.h @@ -367,18 +367,19 @@ xfs_sb_has_ro_compat_feature( return (sbp->sb_features_ro_compat & feature) != 0; } -#define XFS_SB_FEAT_INCOMPAT_FTYPE (1 << 0) /* filetype in dirent */ -#define XFS_SB_FEAT_INCOMPAT_SPINODES (1 << 1) /* sparse inode chunks */ -#define XFS_SB_FEAT_INCOMPAT_META_UUID (1 << 2) /* metadata UUID */ -#define XFS_SB_FEAT_INCOMPAT_BIGTIME (1 << 3) /* large timestamps */ -#define XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR (1 << 4) /* needs xfs_repair */ -#define XFS_SB_FEAT_INCOMPAT_NREXT64 (1 << 5) /* large extent counters */ +#define XFS_SB_FEAT_INCOMPAT_FTYPE (1 << 0) /* filetype in dirent */ +#define XFS_SB_FEAT_INCOMPAT_SPINODES (1 << 1) /* sparse inode chunks */ +#define XFS_SB_FEAT_INCOMPAT_META_UUID (1 << 2) /* metadata UUID */ +#define XFS_SB_FEAT_INCOMPAT_BIGTIME (1 << 3) /* large timestamps */ +#define XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR (1 << 4) /* needs xfs_repair */ +#define XFS_SB_FEAT_INCOMPAT_NREXT64 (1 << 5) /* large extent counters */ +#define XFS_SB_FEAT_INCOMPAT_EXCHRANGE (1 << 6) /* exchangerange supported */ #define XFS_SB_FEAT_INCOMPAT_ALL \ - (XFS_SB_FEAT_INCOMPAT_FTYPE| \ - XFS_SB_FEAT_INCOMPAT_SPINODES| \ - XFS_SB_FEAT_INCOMPAT_META_UUID| \ - XFS_SB_FEAT_INCOMPAT_BIGTIME| \ - XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR| \ + (XFS_SB_FEAT_INCOMPAT_FTYPE | \ + XFS_SB_FEAT_INCOMPAT_SPINODES | \ + XFS_SB_FEAT_INCOMPAT_META_UUID | \ + XFS_SB_FEAT_INCOMPAT_BIGTIME | \ + XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR | \ XFS_SB_FEAT_INCOMPAT_NREXT64) #define XFS_SB_FEAT_INCOMPAT_UNKNOWN ~XFS_SB_FEAT_INCOMPAT_ALL diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h index 8a1e30cf4dc8..53526fca7386 100644 --- a/fs/xfs/libxfs/xfs_fs.h +++ b/fs/xfs/libxfs/xfs_fs.h @@ -239,6 +239,7 @@ typedef struct xfs_fsop_resblks { #define XFS_FSOP_GEOM_FLAGS_BIGTIME (1 << 21) /* 64-bit nsec timestamps */ #define XFS_FSOP_GEOM_FLAGS_INOBTCNT (1 << 22) /* inobt btree counter */ #define XFS_FSOP_GEOM_FLAGS_NREXT64 (1 << 23) /* large extent counters */ +#define XFS_FSOP_GEOM_FLAGS_EXCHANGE_RANGE (1 << 24) /* exchange range */ /* * Minimum and maximum sizes need for growth checks. diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c index 73a4b895de67..c350e259b685 100644 --- a/fs/xfs/libxfs/xfs_sb.c +++ b/fs/xfs/libxfs/xfs_sb.c @@ -26,6 +26,7 @@ #include "xfs_health.h" #include "xfs_ag.h" #include "xfs_rtbitmap.h" +#include "xfs_exchrange.h" /* * Physical superblock buffer manipulations. Shared with libxfs in userspace. @@ -175,6 +176,8 @@ xfs_sb_version_to_features( features |= XFS_FEAT_NEEDSREPAIR; if (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_NREXT64) features |= XFS_FEAT_NREXT64; + if (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_EXCHRANGE) + features |= XFS_FEAT_EXCHANGE_RANGE; return features; } @@ -1259,6 +1262,8 @@ xfs_fs_geometry( } if (xfs_has_large_extent_counts(mp)) geo->flags |= XFS_FSOP_GEOM_FLAGS_NREXT64; + if (xfs_has_exchange_range(mp)) + geo->flags |= XFS_FSOP_GEOM_FLAGS_EXCHANGE_RANGE; geo->rtsectsize = sbp->sb_blocksize; geo->dirblocksize = xfs_dir2_dirblock_bytes(sbp); diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index 6ec038b88454..b022e5120dc4 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -292,6 +292,7 @@ typedef struct xfs_mount { #define XFS_FEAT_BIGTIME (1ULL << 24) /* large timestamps */ #define XFS_FEAT_NEEDSREPAIR (1ULL << 25) /* needs xfs_repair */ #define XFS_FEAT_NREXT64 (1ULL << 26) /* large extent counters */ +#define XFS_FEAT_EXCHANGE_RANGE (1ULL << 27) /* exchange range */ /* Mount features */ #define XFS_FEAT_NOATTR2 (1ULL << 48) /* disable attr2 creation */ @@ -355,6 +356,7 @@ __XFS_HAS_FEAT(inobtcounts, INOBTCNT) __XFS_HAS_FEAT(bigtime, BIGTIME) __XFS_HAS_FEAT(needsrepair, NEEDSREPAIR) __XFS_HAS_FEAT(large_extent_counts, NREXT64) +__XFS_HAS_FEAT(exchange_range, EXCHANGE_RANGE) /* * Mount features diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index bce020374c5e..dbda72df3419 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1727,6 +1727,10 @@ xfs_fs_fill_super( goto out_filestream_unmount; } + if (xfs_has_exchange_range(mp)) + xfs_warn(mp, + "EXPERIMENTAL exchange-range feature enabled. Use at your own risk!"); + error = xfs_mountfs(mp); if (error) goto out_filestream_unmount; -- cgit v1.2.3